公开(公告)号：US06238190B1

公开(公告)日：2001-05-29

申请号：US09272021

申请日：1999-03-18

申请人： Philip James Czarnecki ,  Daniel Brian Ogren ,  Scott Weliver

发明人： Philip James Czarnecki ,  Daniel Brian Ogren ,  Scott Weliver

IPC分类号： F04B4900

CPC分类号： F02M59/366 ,  F02M59/462 ,  F02M59/466 ,  F02M2200/04

摘要： A fuel injector pump for an internal combustion engine including a camshaft-driven fuel delivery plunger, a solenoid valve for controlling transfer of liquid fuel from a fuel plunger cavity to a fuel injector nozzle, and a snubber valve located between the fuel injector nozzle and the plunger whereby unrestricted fuel flow is distributed to the injector nozzle and reverse flow from the nozzle to the plunger chamber is restricted so that cavitation in the fuel delivery passage extending to the nozzle will be avoided and undesirable pressure peaks at the fuel pump are avoided.

摘要翻译： 一种用于内燃机的燃料喷射泵，其包括凸轮轴驱动的燃料输送柱塞，用于控制液体燃料从燃料柱塞腔向燃料喷射器喷嘴的转移的电磁阀，以及位于燃料喷射器喷嘴和燃料喷射器喷嘴之间的缓冲阀 其中不受限制的燃料流分配到喷射器喷嘴并且从喷嘴到柱塞室的反向流动受到限制，使得延伸到喷嘴的燃料输送通道中的空化将被避免，并且避免了燃料泵处的不期望的压力峰值。

公开(公告)号：US6089470A

公开(公告)日：2000-07-18

申请号：US265685

申请日：1999-03-10

申请人： Richard F. Teerman ,  Thomas Steele ,  Philip James Czarnecki

发明人： Richard F. Teerman ,  Thomas Steele ,  Philip James Czarnecki

IPC分类号： F02M51/00 ,  F02M57/02 ,  F02M59/36 ,  F02M59/46 ,  F02M47/02 ,  F02M45/10

CPC分类号： F02M57/023 ,  F02M59/366 ,  F02M59/466

摘要： A control valve assembly for use in a pump or injector of fuel injection systems is provided. A pump or injector body has a pumping chamber, and a valve chamber. The valve chamber defines a valve seat and has an axial guiding portion. A plunger is disposed in the pumping chamber. A valve body disposed in the valve chamber controls fuel. The valve body has a valve stem defining a seating surface. The valve body further has a valve guide in sliding engagement with the valve chamber guiding portion. The valve body is axially movable with respect to the valve chamber over a stroke range. The valve guide has an outer engagement surface that slidingly engages the valve chamber guiding portion with a clearance fit of at least about 5 micrometers in one embodiment. In another embodiment, the axial length of the engagement surface is at most about 7 millimeters. The reduced axial length and/or the clearance fit improve initial sealing performance and sealing performance over the life cycle of the product.

摘要翻译： 提供了一种用于燃料喷射系统的泵或喷射器中的控制阀组件。 泵或喷射器主体具有泵送室和阀室。 阀室限定阀座并具有轴向引导部分。 柱塞被设置在泵送室中。 设置在阀室中的阀体控制燃料。 阀体具有限定座面的阀杆。 阀体还具有与阀室引导部滑动接合的阀引导件。 阀体在行程范围内相对于阀室可轴向移动。 在一个实施例中，阀导向件具有外啮合表面，该外接合表面以至少约5微米的间隙配合滑动地接合阀室引导部分。 在另一个实施例中，接合表面的轴向长度至多约7毫米。 减小的轴向长度和/或间隙配合可提高产品寿命周期内的初始密封性能和密封性能。